Definition of "fidaxomicin" [fidaxomicin]

• A particular narrow-spectrum macrocyclic antibiotic drug (noun)

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• "Optimer has filed a marketing authorization application with the European Medicines Agency for fidaxomicin."
• "Optimer has developed and is commercializing DIFICID™ fidaxomicin tablets, an FDA-approved antibacterial drug for the treatment of adult patients with"
• "The drug called DIFICLIR, or fidaxomicin, was approved for use in the U.S. by the FDA in May."